← The evidence ledger
Evidence row 2201949
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://electrical-calc.x402tookit.com/transformer-sizing
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 7fad7e0e797c06ec70ac6efe914f6bdef4ab73af5715ff0b6b9f494ea6b6d9c3
- Leaf
- 0x3cadb02271bed8d0d198ca005e63bd97614ee9fb05302e3a83621fa55cc8604d
What was observed
{
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"x402",
"https://electrical-calc.x402tookit.com/transformer-sizing"
]
],
"name": "Electrical Calculators",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "20000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
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"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
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"transactionVersions": [
0
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"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "20000",
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"scheme": "exact"
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{
"amount": "20000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
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},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Transformer kVA for a load with a stated margin, next common standard size, and primary and secondary full-load current.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"loadKw": 80,
"marginPct": 25,
"phase": "three",
"powerFactor": 0.8,
"primaryVoltageV": 480,
"secondaryVoltageV": 208
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-21T06:22:29.239Z",
"commonSizesKva": [
15,
30
],
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"loadKva": 100,
"notChecked": [
"inrush current and overcurrent protection sizing",
"harmonic (K-factor) loads, temperature and altitude derating",
"…2 more"
],
"phase": "three",
"primaryFullLoadCurrentA": 180.422,
"reasons": [
"Required kVA = 80 / 0.8 x (1 + 25/100) = 125.",
"Common three-phase sizes: 15, 30, 45, 75, 112.5, 150, 225, 300, 500, 750, 1000, 1500, 2000, 2500, 3750, 5000 kVA (typical values, not an exhaustive standard).",
"…1 more"
],
"requiredKva": 125,
"secondaryCurrentAtLoadA": 277.5722,
"secondaryCurrentAtRequiredKvaA": 346.9653,
"secondaryFullLoadCurrentA": 416.3584,
"selectedStandardKva": 150,
"source": "computed locally (kVA = kW / PF x (1 + margin); I = kVA x 1000 / (V or sqrt(3) V))",
"spareAtSelectedPct": 50,
"summary": "80 kW at PF 0.8 is 100 kVA; with 25% margin 125 kVA, so choose the next common size, 150 kVA.",
"turnsRatio": 2.307692,
"verdict": "SIZE_FOUND"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"loadKw": {
"description": "Connected load in kilowatts",
"type": "number"
},
"marginPct": {
"description": "Spare capacity margin in percent (default 25, 0 to 200)",
"type": "number"
},
"phase": {
"description": "single or three (default three)",
"type": "string"
},
"powerFactor": {
"description": "Load power factor above 0 to 1 (default 0.9)",
"type": "number"
},
"primaryVoltageV": {
"description": "Primary (line-to-line if three phase) voltage in volts, for primary current",
"type": "number"
},
"secondaryVoltageV": {
"description": "Secondary (line-to-line if three phase) voltage in volts",
"type": "number"
}
},
"required": [
"loadKw",
"secondaryVoltageV"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"commonSizesKva": {
"items": {
"type": "number"
},
"type": [
"array",
"null"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"loadKva": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"phase": {
"type": [
"null",
"string"
]
},
"primaryFullLoadCurrentA": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"requiredKva": {
"type": [
"null",
"number"
]
},
"secondaryCurrentAtLoadA": {
"type": [
"null",
"number"
]
},
"secondaryCurrentAtRequiredKvaA": {
"type": [
"null",
"number"
]
},
"secondaryFullLoadCurrentA": {
"type": [
"null",
"number"
]
},
"selectedStandardKva": {
"type": [
"null",
"number"
]
},
"source": {
"type": [
"null",
"string"
]
},
"spareAtSelectedPct": {
"type": [
"null",
"number"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"turnsRatio": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
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],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:51:22.209Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-01T22:51:22.039Z"
},
"resource": "https://electrical-calc.x402tookit.com/transformer-sizing",
"serviceName": "Electrical Calculators",
"tags": [
"transformer",
"kva",
"sizing",
"electrical"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Transformer kVA for a load with a stated margin, next common standard size, and primary and secondary full-load current."
}What the leaf hashes
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Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
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- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af